Lamp



C. E. GODLEYV Patented May 10, 11921.

UNT STT rarest caricia.

CHARLES E. GODLEY, OF DETROIT, MICHIGAN, ASSIGNOR T0 EDM'UNDS & JONESCORPORATION, OF DETROIT, MCI-IIGAN, A. CORPORATION 0F NEW YORK.

LMP.

This invention relates to fastening means for attaching lenses to thebodies of electric headlights, spot-lights and search-lights, and itsobject is to provide lens ring fastening means which shall be simple inconstruction, which shall hold the lens firmly in position, and in whichthe several parts shall be permanently attached to each other.

This invention consists, in combination of a lamp body having aninclined circumferential shoulder near vits open end, a lens ring ordoor adapted to position a lens across said open end, a split band ringhaving inclined edges adapted to engage the inclined shoulder on thebody and an inclined surface on the lens ring, and a toggle mechanism todraw the ends of the band ring together and thereby force the lens ringtoward the body.

It also consists in forming the lens ring with an inturned flangeprovided with a plurality of notches and in providing a correspondingnumber of projections on the outer edge of the body so that the lensring may be slipped onto the edge of the body and then turned to bringthe notches and projections out of register whereby the lens ring isprevented from slipping ofl:l the body.

It further consists in the details of construction illustrated in the'accompanying vdrawing and particularly pointed lout in the claims.

In the drawing, Figure 1 is a front elevation of a lamp provided withthis novel locking band. Fig. 2 is a front elevation of the lockingtoggle for this band in open position. Fig. 3 is a section on the line3*-3 of Fig. 2 on a larger scale. Fig. 4 is a detail of the rim and lensring. Fig. 5 is a section on the linel 5 5 of Fig. 1. Fig. 6 is a.section through the toggle in a plane parallel to Fig. 1. Fig. 7 is amodified form of toggle. Fig. 8 is a detail of a pivot.

Similar reference characters refer to like parts throughout the severalviews.

The structure shown in the drawings is generally the same as that shownin my Specification of Letters Patent.

. tube 29.

1 and 6. ltoward each other and causes the inclined Patented May 19,1921.

Application led February 21, 1920. Sera No. 360,501.

Patent No. 1,340,163, dated May 18, 1920, and as in that, the body 1 ofthe lamp shown 1n the present drawing has an inclined cirn cumferentialshoulder 2 terminating in a bead 3, which is at the rear edge of acylindrical flange 4 which is provided at intervals with outwardlyextending projections 5. Within the body is a reflector` 6 provided witha radial flange 7 and a groove to re'- ceive the packing ring 8 againstwhich the lens 9 is pressed by the lens ring 10. This lens ring is madeof resilient metal and may be' sprung or bent about the edge 12 whichengages the glass. The inturned edge 14 of this ring has notches 13 topermit the passage of the projections 5 on the body. Clips 15 on thelens ring position the lens 9, as many clips being employed .as may bethought necessary, four being preferred.

The split locking band 17 has outwardly inclined flanges 18 and 19 andmay be opened out to pass over the lens ring and the bead 3 on the lampbody. The flanges 18 and 19 are inclined so that when the ring iscontracted, these flanges will force the lens ring and body toward eachother. ln the above named pending application this is accomplished by ascrew which may become lost. .In the present case a toggle mechanism isemployed which may be single or double.

The single toggle mechanism embodies -two plates 21 and 22, secured tothe ends of the ring 17, and each has ears 23 to take the pivot pins 24and 24a. A spacing tube 25 holds these ears separated. Links 26 aremounted on the pin 24 of the plate 22 and connect to the pin 27 carriedby the clasp 28, being preferably separated by a spacing The clasp has.sides 30 and 31 whose edges flare to fit the flanges 18 and 19 of thelocking ring when the clasp is in the position shown in Fig. 1. Thepivot pin 24a extends through these sides and the ears 23 on the plate21, a spacing tube 25 being provided to separate theears.

When the clasp 28 is inthe position shown in Fig. 2, the band 17 may beopened topermit the band to be slipped over the lens ring and bead 3 onthe body. The band is then closed as far as possible and the clasp isthen swun to the position shown in Figs. his forces the pins 24 and 24*lsides 18 and 19 of the band to press the lens ring toward the body. Itwill be noticed that there is no sto-p for the lens ring on the body butthat-the lens is pressed hard y against the reflector which is supportedin any Well known manner. 'When the parts are in the position shown inFig. 6, the pin 24 is outside of a plane passing through the pins 24aand 27 and the possibility of this toggle swinging out is therebyavoided.

In Fig. 7, a double toggle is shown. The plates 34 carry pins 35 onWhich the links 36 and Bare mounted. The pins 38 and 39 carried by theends of the clasp 40 receive the outer ends of these links. When theparts are in the position shown in Fig. 7, the pins 85 are outside theplane connecting the pins 38 and 39- and any push by the pins 35 on thelinks 36 and 37, due to the stresses on the b'and 17, Will serve topress the clasp 40 tighter against the band.

Instead of a single pin vvith a spacing tube around it, I may employ atube 42 to space the links 26, 86 or 37 and drive short pins 43 throughholes in the sides of the clamp and in the ends of the links into thistube. The sizes Will be such that rigid engagement results. I

The reason' for providing the notches 13 in the edge 14 of the lens ringand the pro- 'jections 5 on the flange 4 of the body is this. Where vthelens ring is held on by a locking band it is sometimes pulled off ordrops oli" when the band is removed. But by providing the ,projections 5and notches 13, the lens ring may be secured to the body so that itcannot fall ofl", thus saving many lenses.

The details and proportions of the varions parts of this lookinmechanism may all be varied by those s illed in the Aart Withoutdeparting from the spirit of my invention as set forth in the followingclaims.

I claim 1. In a lamp, the combination of a lamp body having a circularshoulder, a lens ring at thev open end of the body, a split lockino`band extending around the lens ring and body and having inturnedmarginal flanges to engage them, and a toggle mechanism to draw the endsof the band together, and

comprising a clasp and links connecting one end of the clasp to each endof said band.`

, 2. In a lamp, the combination of a lamp to engage them, and a togglemechanism to draw the ends of the band together and comprising an ear ateach end of said band, links pivoted to said ears, and a clasp havingthe outer ends of said links pivoted to its ends.

3. In a lamp, the combination of a lamp body having a circular shoulder,a lens ring at the open end of the body, a split locking band extendingaround the lens ring and body and having internal marginal flanges toengage them, a toggle mechanism to draw the ends of the band together,said flanges on the locking band flaring outwardly and the engagedsurfaces of the body and lens ring being similarly inclined so that aWedging action occurs when the band is contracted, said toggle mechanismcomprising a pair of ears at each end of said band, a pair of linkspivoted to each pair of ears, and a clasp having the outer ends of onepair oflinks pivoted to each of its ends, the sides of said clasp beingadapted to fit the flanges on the locking band when said band iscontracted by the toggle mechanism.

4. In a lamp, the combination of a lamp body having a circular shoulder,a lens ring at the open end of the body, a split locking band extendingaround the lens ring and body and having internal marginal flanges toengage them, a toggle mechanism to dravv the ends of the band together,said flanges on the locking band flaring outwardly and they engagedsurfaces of the body and lens ring being similarly inclined so that aWedging action occurs When the band is contracted, said toggle mcchanisrcomprising a pair of ears at each end of said band, a pair of linkspivoted to each pair of ears, and a clasp having the outer ends of onepair of links pivoted to cach of its ends, the sides of said clasp beingadapted to lit the flanges on the locking band when said band iscontracted by the toggle mechanism, said lamp body having a cylindricalflange at its open end provided With outwardly extending projections andsaid locking ring being formed to engage said projections to be held inposition thereby.

CHARLES E. GODLEY.

